When my labs look good but i feel totally off

my doc keeps looking at my a1c and saying ‘that’s fine, ngozi.’ but idk, it feels like something else is happening metabolically when things are just slightly out of whack. cortisol levels fluctuate so much based on stress periods that even when the average looks okay, i swear i feel physically depleted anyway.

has anyone dealt with feeling this off despite seemingly normal labs? what markers did you have to track down?